33 weeks- Your baby might be in Cephalic (Head-Down) position now!  

33 weeks- Your baby might be in Cephalic (Head-Down) position now!  

33 weeks

Your baby might be around 44-45 cms long and weigh 1700 – 2000 grams. They may henceforth gain 35-40 grams per day as a result of which you may gain around half a kilo per week. As there is higher calorie requirements for both of you, kindly eat good nutritious food at frequent small potions. Adequate calcium intake is extremely important for the developing bones of baby.

As the baby’s brain continues to grow larger than rest of the body and there is deposition of calcium in the scalp bones, its head becomes heavier and favors head-down position that is favorable for vaginal delivery. So, the baby who was in breech position (buttocks down) until now, acquires vertex (head down) position.


However, the fontanels (junctions where scalp bones unite) remain un-calcified, soft and pliable until quite some time after birth. The nature has thoughtfully designed it so as to facilitate-

  • Moulding (overlapping) of bones that reduces the diameter of fetal head and allow easy passage through bony pelvis during birthing.
  • Prevent rise in intracranial pressure in case there is some swelling in brain due to untoward injury during birthing.


By now, their immune system is optimally developed to offer protection against harmful bacteria and viruses. The innate or natural immune system has two components. The passive immunity is offered by the Mother’s IgG subtypes antibodies that traverse through the placenta and milk to reach the baby. The active immunity would gradually develop with the exposure to infection or immunization after birth.

As the baby grows large and amniotic fluid decline, the fetal movements are restricted. However, if you fail to perceive them for quite a long time, kindly contact your Doctor. The nature has designed fall in amniotic fluid in third trimester with growth of the baby so as to,

  • To accommodate the growing fetus in limited uterine space.
  • To prevent discomfort to the mother due to over distension.
  • To facilitate decent of fetal head gradually to prepare for birthing.


The baby is busy practicing breathing and swallowing.

The soft thin lanugo hairs are replaced by thick actual hair. The nails are now long enough to reach the tip of fingers. They may scratch their face even before birth.

You may experience discomfort in breathing and while lying down due to pressure over the diaphragm by the growing uterus. The pressure over the intestines may lead to loss of appetite or early satiety. However, this would gradually get better after 36 weeks with the decent of fetal head into pelvic cavity.


The purpose to share this information is to sensitize you to enhance the bondage between you & baby. This broad information is purely based on the scientific data collected. However, every child may grow at a variable pace.